Invention Grant
- Patent Title: Pre-sressed insulated tubing
- Patent Title (中): 预应力绝缘管
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Application No.: US13345327Application Date: 2012-01-06
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Publication No.: US09027607B2Publication Date: 2015-05-12
- Inventor: Yaoqing Pan , Yongning Wu , Jinli Zhu , Xiaohui Zhang , Wei Zhang , Zhenyu Xu , Zhenyu Jia , Ji Chen , Yi Wang
- Applicant: Yaoqing Pan , Yongning Wu , Jinli Zhu , Xiaohui Zhang , Wei Zhang , Zhenyu Xu , Zhenyu Jia , Ji Chen , Yi Wang
- Applicant Address: CN Panjin, Liaoning Province
- Assignee: General Machinery Plant of Liaohe Petroleum Exploration Bureau of CNPC
- Current Assignee: General Machinery Plant of Liaohe Petroleum Exploration Bureau of CNPC
- Current Assignee Address: CN Panjin, Liaoning Province
- Agency: The Webb Law Firm
- Priority: CN201110002466 20110107
- Main IPC: F16L9/14
- IPC: F16L9/14 ; E21B17/00 ; F16L9/04 ; E21B36/00 ; F16L59/065
Abstract:
The present invention relates to a pre-stressed insulated tubing, including an inner tube (3) and an outer tube (2) nested outside of the inner tube (3), and a closed ring cavity is formed between the inner tube (3) and the outer tube (2), wherein an insulated casing (4) is arranged in the closed ring cavity. The pre-stressed insulated tubing of the present invention features high vacuum degree, high thermal insulation level and long working life, and the insulated casing is reusable for cost saving.
Public/Granted literature
- US20120175007A1 Pre-Sressed Insulated Tubing Public/Granted day:2012-07-12
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